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Return the result from user admin command IOCTL even in case of failure

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We copy the result to user if the command is completed from the
controller even if it completes with failure (non-zero) status.
A return status of < 0 indicates the command was not completed
by the controller. The user application may expect the error code
in the result field in case of failure.

Signed-off-by: Chayan Biswas <Chayan.Biswas@sandisk.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
This commit is contained in:
Chayan Biswas 2013-05-22 22:34:49 +00:00 committed by Matthew Wilcox
parent 053ab702cc
commit cf90bc4830
1 changed files with 1 additions and 1 deletions
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2
drivers/block/nvme-core.c
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@ -1439,7 +1439,7 @@ static int nvme_user_admin_cmd(struct nvme_dev *dev,
nvme_free_iod(dev, iod);
}
if (!status && copy_to_user(&ucmd->result, &cmd.result,
if ((status >= 0) && copy_to_user(&ucmd->result, &cmd.result,
sizeof(cmd.result)))
status = -EFAULT;